Blockchain Developer – Bank — Sidram Technologies Job New York New York USA,Software Development

Position: BLOCKCHAIN DEVELOPER – CITI BANK — SIDRAM TECHNOLOGIES
Location: New York

NOW HIRING: BLOCKCHAIN DEVELOPER CITI BANK

Company: SIDRAM TECHNOLOGIES
Location: NJ The College of New Jersey US
Sector: Blockchain
Source: web
3.career

Client: Citi Bank

Location: New York, NY / Jersey City, NJ

Position Type: Full-Time

Experience: 10+ Years

Role Overview

Seeking an experienced Blockchain Developer to design, develop, and deploy Web3 components and integrations for Citi s Digital Asset Platform
, including smart contracts, blockchain integrations, wallet solutions, and digital asset infrastructure.

Must-have Skills

Blockchain / Web3 Development
Solidity Smart Contracts
Ethereum / Hyperledger Besu / Corda or equivalent
Java / Spring or Node.js
Web3J / Web3JS / Ethers.js / Viem
Smart Contract Testing Hardhat / Foundry / Truffle
Blockchain Fundamentals Consensus, Transactions, Gas & Wallet Infrastructure
ERC-20 / ERC-721 / ERC-1155 / ERC-3525
Event-Driven Architecture / Asynchronous Programming
Cryptography Digital Signatures, Hashing, PKI & Key Management

Preferred / Plus Skills

Hyperledger Besu / Fabric / Corda / R3
Digital Asset Custody
Financial Services / Regulated Industry Experience
Agile / Scrum

Key Responsibilities

Build and integrate Web3 components, smart contracts and blockchain protocols.
Develop backend services connecting to public and permissioned blockchain networks.
Build, test and audit secure and gas-efficient smart contracts.
Implement event-driven architectures for on-chain events and transaction lifecycle management.
Support digital asset custody, tokenization and DeFi/Trad Fi integrations.
Collaborate with architects and senior engineers on scalable and secure Web3 infrastructure.
Participate in code reviews, testing, documentation and Agile/Scrum delivery.

IDEAL CANDIDATE

Strong Web3 engineering and backend development background
Strong security mindset and knowledge of smart contract vulnerabilities
Excellent problem-solving and communication skills
Strong understanding of APIs, microservices, data structures and design patterns
Ability to work effectively with global, distributed engineering teams